/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg true -i ../../../trunk/examples/svcomp/weaver/popl20-more-min-le-max.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-175f719-m [2023-11-29 22:36:58,909 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 22:36:58,942 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2023-11-29 22:36:58,957 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 22:36:58,958 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 22:36:58,958 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 22:36:58,958 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 22:36:58,959 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 22:36:58,959 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 22:36:58,959 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 22:36:58,959 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 22:36:58,960 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 22:36:58,960 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 22:36:58,960 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 22:36:58,960 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 22:36:58,960 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 22:36:58,961 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 22:36:58,961 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 22:36:58,961 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 22:36:58,961 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 22:36:58,961 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 22:36:58,962 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 22:36:58,962 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 22:36:58,962 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-29 22:36:58,962 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 22:36:58,962 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-29 22:36:58,962 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 22:36:58,963 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 22:36:58,963 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 22:36:58,963 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 22:36:58,963 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 22:36:58,963 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 22:36:58,963 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 22:36:58,964 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true [2023-11-29 22:36:59,093 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 22:36:59,107 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 22:36:59,111 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 22:36:59,111 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 22:36:59,113 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 22:36:59,114 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-min-le-max.wvr.c [2023-11-29 22:37:00,031 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 22:37:00,215 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 22:37:00,216 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-min-le-max.wvr.c [2023-11-29 22:37:00,222 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b99f66926/50e405e06ae842d6b8cde19826deeea2/FLAG4f39e380d [2023-11-29 22:37:00,236 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b99f66926/50e405e06ae842d6b8cde19826deeea2 [2023-11-29 22:37:00,240 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 22:37:00,241 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-29 22:37:00,243 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 22:37:00,244 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 22:37:00,246 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 22:37:00,247 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:37:00" (1/1) ... [2023-11-29 22:37:00,248 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61e7b194 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:37:00, skipping insertion in model container [2023-11-29 22:37:00,248 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:37:00" (1/1) ... [2023-11-29 22:37:00,270 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 22:37:00,384 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-min-le-max.wvr.c[2525,2538] [2023-11-29 22:37:00,389 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 22:37:00,395 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 22:37:00,407 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-min-le-max.wvr.c[2525,2538] [2023-11-29 22:37:00,409 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 22:37:00,413 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 22:37:00,413 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 22:37:00,418 INFO L206 MainTranslator]: Completed translation [2023-11-29 22:37:00,418 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:37:00 WrapperNode [2023-11-29 22:37:00,418 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 22:37:00,419 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 22:37:00,419 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 22:37:00,419 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 22:37:00,423 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:37:00" (1/1) ... [2023-11-29 22:37:00,430 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:37:00" (1/1) ... [2023-11-29 22:37:00,443 INFO L138 Inliner]: procedures = 24, calls = 43, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 106 [2023-11-29 22:37:00,443 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 22:37:00,444 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 22:37:00,444 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 22:37:00,444 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 22:37:00,449 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:37:00" (1/1) ... [2023-11-29 22:37:00,449 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:37:00" (1/1) ... [2023-11-29 22:37:00,459 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:37:00" (1/1) ... [2023-11-29 22:37:00,459 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:37:00" (1/1) ... [2023-11-29 22:37:00,468 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:37:00" (1/1) ... [2023-11-29 22:37:00,471 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:37:00" (1/1) ... [2023-11-29 22:37:00,472 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:37:00" (1/1) ... [2023-11-29 22:37:00,472 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:37:00" (1/1) ... [2023-11-29 22:37:00,474 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 22:37:00,474 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 22:37:00,474 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 22:37:00,474 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 22:37:00,475 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:37:00" (1/1) ... [2023-11-29 22:37:00,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-29 22:37:00,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 22:37:00,500 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-29 22:37:00,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-29 22:37:00,524 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 22:37:00,524 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 22:37:00,524 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 22:37:00,525 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 22:37:00,525 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 22:37:00,525 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-29 22:37:00,525 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-29 22:37:00,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-29 22:37:00,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 22:37:00,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-29 22:37:00,526 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-29 22:37:00,526 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-29 22:37:00,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 22:37:00,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 22:37:00,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 22:37:00,526 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-29 22:37:00,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 22:37:00,528 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 22:37:00,596 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 22:37:00,598 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 22:37:00,779 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 22:37:00,818 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 22:37:00,818 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-29 22:37:00,819 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:37:00 BoogieIcfgContainer [2023-11-29 22:37:00,819 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 22:37:00,821 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 22:37:00,821 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 22:37:00,823 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 22:37:00,823 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 10:37:00" (1/3) ... [2023-11-29 22:37:00,823 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@602b5395 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 10:37:00, skipping insertion in model container [2023-11-29 22:37:00,824 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:37:00" (2/3) ... [2023-11-29 22:37:00,824 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@602b5395 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 10:37:00, skipping insertion in model container [2023-11-29 22:37:00,824 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:37:00" (3/3) ... [2023-11-29 22:37:00,825 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-min-le-max.wvr.c [2023-11-29 22:37:00,836 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 22:37:00,836 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 22:37:00,837 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 22:37:00,880 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-29 22:37:00,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 153 places, 153 transitions, 327 flow [2023-11-29 22:37:00,959 INFO L124 PetriNetUnfolderBase]: 10/150 cut-off events. [2023-11-29 22:37:00,959 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-29 22:37:00,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 150 events. 10/150 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 90 event pairs, 0 based on Foata normal form. 0/139 useless extension candidates. Maximal degree in co-relation 118. Up to 2 conditions per place. [2023-11-29 22:37:00,963 INFO L82 GeneralOperation]: Start removeDead. Operand has 153 places, 153 transitions, 327 flow [2023-11-29 22:37:00,966 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 139 places, 139 transitions, 296 flow [2023-11-29 22:37:00,972 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 22:37:00,976 INFO L362 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7b056b38, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 22:37:00,976 INFO L363 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-29 22:37:01,021 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 22:37:01,021 INFO L124 PetriNetUnfolderBase]: 10/138 cut-off events. [2023-11-29 22:37:01,022 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-29 22:37:01,022 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:37:01,022 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 22:37:01,023 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 22:37:01,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:37:01,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1625881648, now seen corresponding path program 1 times [2023-11-29 22:37:01,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:37:01,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487283741] [2023-11-29 22:37:01,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:37:01,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:37:01,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:37:01,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:37:01,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:37:01,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487283741] [2023-11-29 22:37:01,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487283741] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 22:37:01,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 22:37:01,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 22:37:01,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973981092] [2023-11-29 22:37:01,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 22:37:01,646 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 22:37:01,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:37:01,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 22:37:01,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-29 22:37:01,675 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 153 [2023-11-29 22:37:01,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 139 transitions, 296 flow. Second operand has 6 states, 6 states have (on average 104.16666666666667) internal successors, (625), 6 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:37:01,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:37:01,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 153 [2023-11-29 22:37:01,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:37:01,861 INFO L124 PetriNetUnfolderBase]: 171/491 cut-off events. [2023-11-29 22:37:01,861 INFO L125 PetriNetUnfolderBase]: For 88/88 co-relation queries the response was YES. [2023-11-29 22:37:01,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 912 conditions, 491 events. 171/491 cut-off events. For 88/88 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2243 event pairs, 62 based on Foata normal form. 5/414 useless extension candidates. Maximal degree in co-relation 748. Up to 188 conditions per place. [2023-11-29 22:37:01,870 INFO L140 encePairwiseOnDemand]: 138/153 looper letters, 47 selfloop transitions, 5 changer transitions 4/141 dead transitions. [2023-11-29 22:37:01,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 141 transitions, 418 flow [2023-11-29 22:37:01,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 22:37:01,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 22:37:01,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 752 transitions. [2023-11-29 22:37:01,886 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7021475256769374 [2023-11-29 22:37:01,886 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 752 transitions. [2023-11-29 22:37:01,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 752 transitions. [2023-11-29 22:37:01,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:37:01,889 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 752 transitions. [2023-11-29 22:37:01,894 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 107.42857142857143) internal successors, (752), 7 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:37:01,899 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 153.0) internal successors, (1224), 8 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:37:01,899 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 153.0) internal successors, (1224), 8 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:37:01,902 INFO L307 CegarLoopForPetriNet]: 139 programPoint places, 6 predicate places. [2023-11-29 22:37:01,902 INFO L500 AbstractCegarLoop]: Abstraction has has 145 places, 141 transitions, 418 flow [2023-11-29 22:37:01,903 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 104.16666666666667) internal successors, (625), 6 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:37:01,903 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:37:01,903 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 22:37:01,903 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 22:37:01,904 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 22:37:01,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:37:01,904 INFO L85 PathProgramCache]: Analyzing trace with hash -158091300, now seen corresponding path program 1 times [2023-11-29 22:37:01,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:37:01,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929872724] [2023-11-29 22:37:01,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:37:01,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:37:01,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:37:02,073 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:37:02,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:37:02,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929872724] [2023-11-29 22:37:02,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929872724] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 22:37:02,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 22:37:02,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 22:37:02,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027495872] [2023-11-29 22:37:02,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 22:37:02,076 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 22:37:02,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:37:02,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 22:37:02,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 22:37:02,078 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 153 [2023-11-29 22:37:02,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 141 transitions, 418 flow. Second operand has 7 states, 7 states have (on average 115.0) internal successors, (805), 7 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:37:02,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:37:02,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 153 [2023-11-29 22:37:02,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:37:02,260 INFO L124 PetriNetUnfolderBase]: 197/639 cut-off events. [2023-11-29 22:37:02,260 INFO L125 PetriNetUnfolderBase]: For 232/422 co-relation queries the response was YES. [2023-11-29 22:37:02,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1491 conditions, 639 events. 197/639 cut-off events. For 232/422 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2990 event pairs, 68 based on Foata normal form. 13/552 useless extension candidates. Maximal degree in co-relation 1012. Up to 278 conditions per place. [2023-11-29 22:37:02,264 INFO L140 encePairwiseOnDemand]: 141/153 looper letters, 39 selfloop transitions, 8 changer transitions 22/163 dead transitions. [2023-11-29 22:37:02,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 163 transitions, 638 flow [2023-11-29 22:37:02,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 22:37:02,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 22:37:02,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1167 transitions. [2023-11-29 22:37:02,266 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7627450980392156 [2023-11-29 22:37:02,266 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1167 transitions. [2023-11-29 22:37:02,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1167 transitions. [2023-11-29 22:37:02,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:37:02,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1167 transitions. [2023-11-29 22:37:02,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 116.7) internal successors, (1167), 10 states have internal predecessors, (1167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:37:02,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 153.0) internal successors, (1683), 11 states have internal predecessors, (1683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:37:02,272 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 153.0) internal successors, (1683), 11 states have internal predecessors, (1683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:37:02,272 INFO L307 CegarLoopForPetriNet]: 139 programPoint places, 15 predicate places. [2023-11-29 22:37:02,272 INFO L500 AbstractCegarLoop]: Abstraction has has 154 places, 163 transitions, 638 flow [2023-11-29 22:37:02,273 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 115.0) internal successors, (805), 7 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:37:02,273 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:37:02,273 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 22:37:02,273 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 22:37:02,273 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 22:37:02,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:37:02,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1088834412, now seen corresponding path program 1 times [2023-11-29 22:37:02,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:37:02,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280985213] [2023-11-29 22:37:02,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:37:02,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:37:02,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:37:02,417 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 22:37:02,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:37:02,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280985213] [2023-11-29 22:37:02,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280985213] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 22:37:02,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152402368] [2023-11-29 22:37:02,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:37:02,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:37:02,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 22:37:02,421 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 22:37:02,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 22:37:02,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:37:02,528 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 22:37:02,538 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 22:37:02,699 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 22:37:02,699 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 22:37:02,842 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 22:37:02,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [152402368] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 22:37:02,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 22:37:02,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 14 [2023-11-29 22:37:02,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719315337] [2023-11-29 22:37:02,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 22:37:02,843 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 22:37:02,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:37:02,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 22:37:02,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2023-11-29 22:37:02,845 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 153 [2023-11-29 22:37:02,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 163 transitions, 638 flow. Second operand has 7 states, 7 states have (on average 115.28571428571429) internal successors, (807), 7 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:37:02,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:37:02,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 153 [2023-11-29 22:37:02,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:37:03,024 INFO L124 PetriNetUnfolderBase]: 285/892 cut-off events. [2023-11-29 22:37:03,024 INFO L125 PetriNetUnfolderBase]: For 787/1349 co-relation queries the response was YES. [2023-11-29 22:37:03,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2532 conditions, 892 events. 285/892 cut-off events. For 787/1349 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5224 event pairs, 109 based on Foata normal form. 1/804 useless extension candidates. Maximal degree in co-relation 1850. Up to 387 conditions per place. [2023-11-29 22:37:03,030 INFO L140 encePairwiseOnDemand]: 142/153 looper letters, 47 selfloop transitions, 8 changer transitions 29/180 dead transitions. [2023-11-29 22:37:03,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 180 transitions, 900 flow [2023-11-29 22:37:03,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 22:37:03,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 22:37:03,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 948 transitions. [2023-11-29 22:37:03,032 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7745098039215687 [2023-11-29 22:37:03,032 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 948 transitions. [2023-11-29 22:37:03,033 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 948 transitions. [2023-11-29 22:37:03,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:37:03,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 948 transitions. [2023-11-29 22:37:03,035 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 118.5) internal successors, (948), 8 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:37:03,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 153.0) internal successors, (1377), 9 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:37:03,037 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 153.0) internal successors, (1377), 9 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:37:03,038 INFO L307 CegarLoopForPetriNet]: 139 programPoint places, 22 predicate places. [2023-11-29 22:37:03,038 INFO L500 AbstractCegarLoop]: Abstraction has has 161 places, 180 transitions, 900 flow [2023-11-29 22:37:03,039 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 115.28571428571429) internal successors, (807), 7 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:37:03,039 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:37:03,039 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 22:37:03,046 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 22:37:03,243 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:37:03,244 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 22:37:03,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:37:03,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1351986702, now seen corresponding path program 1 times [2023-11-29 22:37:03,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:37:03,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449081019] [2023-11-29 22:37:03,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:37:03,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:37:03,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:37:03,702 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 22:37:03,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:37:03,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449081019] [2023-11-29 22:37:03,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449081019] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 22:37:03,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705748354] [2023-11-29 22:37:03,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:37:03,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:37:03,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 22:37:03,705 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 22:37:03,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 22:37:03,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:37:03,809 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 50 conjunts are in the unsatisfiable core [2023-11-29 22:37:03,816 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 22:37:03,848 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 22:37:03,881 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-29 22:37:03,882 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-11-29 22:37:03,951 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-29 22:37:03,952 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-29 22:37:04,014 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 22:37:04,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 22:37:04,223 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 16 [2023-11-29 22:37:04,304 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 16 [2023-11-29 22:37:04,394 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-29 22:37:04,440 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:37:04,440 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 22:37:05,077 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 22:37:05,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [705748354] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 22:37:05,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 22:37:05,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10, 23] total 33 [2023-11-29 22:37:05,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470072695] [2023-11-29 22:37:05,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 22:37:05,078 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 22:37:05,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:37:05,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 22:37:05,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=924, Unknown=1, NotChecked=0, Total=1056 [2023-11-29 22:37:05,080 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 153 [2023-11-29 22:37:05,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 180 transitions, 900 flow. Second operand has 10 states, 10 states have (on average 79.5) internal successors, (795), 10 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:37:05,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:37:05,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 153 [2023-11-29 22:37:05,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:37:06,323 INFO L124 PetriNetUnfolderBase]: 4085/7646 cut-off events. [2023-11-29 22:37:06,323 INFO L125 PetriNetUnfolderBase]: For 6811/6841 co-relation queries the response was YES. [2023-11-29 22:37:06,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25218 conditions, 7646 events. 4085/7646 cut-off events. For 6811/6841 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 57498 event pairs, 641 based on Foata normal form. 0/7066 useless extension candidates. Maximal degree in co-relation 20208. Up to 3064 conditions per place. [2023-11-29 22:37:06,369 INFO L140 encePairwiseOnDemand]: 137/153 looper letters, 229 selfloop transitions, 22 changer transitions 130/447 dead transitions. [2023-11-29 22:37:06,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 447 transitions, 3502 flow [2023-11-29 22:37:06,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 22:37:06,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-29 22:37:06,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1315 transitions. [2023-11-29 22:37:06,372 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5729847494553377 [2023-11-29 22:37:06,372 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1315 transitions. [2023-11-29 22:37:06,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1315 transitions. [2023-11-29 22:37:06,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:37:06,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1315 transitions. [2023-11-29 22:37:06,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 87.66666666666667) internal successors, (1315), 15 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:37:06,377 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 153.0) internal successors, (2448), 16 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:37:06,378 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 153.0) internal successors, (2448), 16 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:37:06,378 INFO L307 CegarLoopForPetriNet]: 139 programPoint places, 36 predicate places. [2023-11-29 22:37:06,378 INFO L500 AbstractCegarLoop]: Abstraction has has 175 places, 447 transitions, 3502 flow [2023-11-29 22:37:06,379 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 79.5) internal successors, (795), 10 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:37:06,379 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:37:06,379 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 22:37:06,386 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-29 22:37:06,586 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-11-29 22:37:06,587 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 22:37:06,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:37:06,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1113602814, now seen corresponding path program 2 times [2023-11-29 22:37:06,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:37:06,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538550075] [2023-11-29 22:37:06,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:37:06,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:37:06,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:37:06,905 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 22:37:06,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:37:06,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538550075] [2023-11-29 22:37:06,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538550075] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 22:37:06,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945968631] [2023-11-29 22:37:06,910 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 22:37:06,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:37:06,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 22:37:06,912 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 22:37:06,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 22:37:06,998 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 22:37:06,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 22:37:07,000 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 22:37:07,008 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 22:37:07,050 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-29 22:37:07,104 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 20 [2023-11-29 22:37:07,174 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 22:37:07,174 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 22:37:07,243 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 23 [2023-11-29 22:37:07,320 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 22:37:07,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945968631] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 22:37:07,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 22:37:07,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11, 12] total 19 [2023-11-29 22:37:07,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794189341] [2023-11-29 22:37:07,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 22:37:07,321 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 22:37:07,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:37:07,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 22:37:07,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2023-11-29 22:37:07,322 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 153 [2023-11-29 22:37:07,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 447 transitions, 3502 flow. Second operand has 9 states, 9 states have (on average 92.0) internal successors, (828), 9 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:37:07,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:37:07,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 153 [2023-11-29 22:37:07,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:37:08,124 INFO L124 PetriNetUnfolderBase]: 4085/7679 cut-off events. [2023-11-29 22:37:08,124 INFO L125 PetriNetUnfolderBase]: For 9800/10139 co-relation queries the response was YES. [2023-11-29 22:37:08,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28257 conditions, 7679 events. 4085/7679 cut-off events. For 9800/10139 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 57419 event pairs, 490 based on Foata normal form. 31/7159 useless extension candidates. Maximal degree in co-relation 22537. Up to 3064 conditions per place. [2023-11-29 22:37:08,146 INFO L140 encePairwiseOnDemand]: 139/153 looper letters, 0 selfloop transitions, 0 changer transitions 499/499 dead transitions. [2023-11-29 22:37:08,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 499 transitions, 4571 flow [2023-11-29 22:37:08,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 22:37:08,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 22:37:08,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1181 transitions. [2023-11-29 22:37:08,149 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5937657114127702 [2023-11-29 22:37:08,149 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1181 transitions. [2023-11-29 22:37:08,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1181 transitions. [2023-11-29 22:37:08,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:37:08,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1181 transitions. [2023-11-29 22:37:08,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 90.84615384615384) internal successors, (1181), 13 states have internal predecessors, (1181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:37:08,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 153.0) internal successors, (2142), 14 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:37:08,154 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 153.0) internal successors, (2142), 14 states have internal predecessors, (2142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:37:08,154 INFO L307 CegarLoopForPetriNet]: 139 programPoint places, 44 predicate places. [2023-11-29 22:37:08,154 INFO L500 AbstractCegarLoop]: Abstraction has has 183 places, 499 transitions, 4571 flow [2023-11-29 22:37:08,155 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 92.0) internal successors, (828), 9 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 22:37:08,159 INFO L143 wickiGriesTestDumper]: Dumping Owicki-Gries test to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/popl20-more-min-le-max.wvr.c_BEv2_AllErrorsAtOnce [2023-11-29 22:37:08,182 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-29 22:37:08,183 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-11-29 22:37:08,183 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-29 22:37:08,183 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-29 22:37:08,191 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-29 22:37:08,388 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:37:08,388 INFO L457 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2023-11-29 22:37:08,390 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-29 22:37:08,390 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 22:37:08,394 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 10:37:08 BasicIcfg [2023-11-29 22:37:08,394 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 22:37:08,394 INFO L158 Benchmark]: Toolchain (without parser) took 8153.16ms. Allocated memory was 526.4MB in the beginning and 633.3MB in the end (delta: 107.0MB). Free memory was 490.6MB in the beginning and 306.9MB in the end (delta: 183.7MB). Peak memory consumption was 288.9MB. Max. memory is 16.0GB. [2023-11-29 22:37:08,394 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 381.7MB. Free memory was 336.4MB in the beginning and 336.3MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.0GB. [2023-11-29 22:37:08,395 INFO L158 Benchmark]: CACSL2BoogieTranslator took 174.72ms. Allocated memory is still 526.4MB. Free memory was 490.3MB in the beginning and 478.6MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-11-29 22:37:08,395 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.71ms. Allocated memory is still 526.4MB. Free memory was 478.6MB in the beginning and 476.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-11-29 22:37:08,395 INFO L158 Benchmark]: Boogie Preprocessor took 30.17ms. Allocated memory is still 526.4MB. Free memory was 476.9MB in the beginning and 475.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-11-29 22:37:08,395 INFO L158 Benchmark]: RCFGBuilder took 345.20ms. Allocated memory is still 526.4MB. Free memory was 475.2MB in the beginning and 454.6MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-11-29 22:37:08,396 INFO L158 Benchmark]: TraceAbstraction took 7573.09ms. Allocated memory was 526.4MB in the beginning and 633.3MB in the end (delta: 107.0MB). Free memory was 454.2MB in the beginning and 306.9MB in the end (delta: 147.3MB). Peak memory consumption was 253.3MB. Max. memory is 16.0GB. [2023-11-29 22:37:08,397 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 381.7MB. Free memory was 336.4MB in the beginning and 336.3MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 174.72ms. Allocated memory is still 526.4MB. Free memory was 490.3MB in the beginning and 478.6MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 24.71ms. Allocated memory is still 526.4MB. Free memory was 478.6MB in the beginning and 476.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 30.17ms. Allocated memory is still 526.4MB. Free memory was 476.9MB in the beginning and 475.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 345.20ms. Allocated memory is still 526.4MB. Free memory was 475.2MB in the beginning and 454.6MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * TraceAbstraction took 7573.09ms. Allocated memory was 526.4MB in the beginning and 633.3MB in the end (delta: 107.0MB). Free memory was 454.2MB in the beginning and 306.9MB in the end (delta: 147.3MB). Peak memory consumption was 253.3MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 98]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 174 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 7.5s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 9 mSolverCounterUnknown, 274 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 274 mSDsluCounter, 973 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 752 mSDsCounter, 22 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 956 IncrementalHoareTripleChecker+Invalid, 987 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 22 mSolverCounterUnsat, 221 mSDtfsCounter, 956 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 822 GetRequests, 719 SyntacticMatches, 9 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 523 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4571occurred in iteration=5, InterpolantAutomatonStates: 53, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 983 NumberOfCodeBlocks, 983 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 1351 ConstructedInterpolants, 5 QuantifiedInterpolants, 6084 SizeOfPredicates, 52 NumberOfNonLiveVariables, 923 ConjunctsInSsa, 75 ConjunctsInUnsatCore, 11 InterpolantComputations, 5 PerfectInterpolantSequences, 17/25 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-29 22:37:08,415 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...